Opuntia echinocarpa var. major Engelm. & J.M.Bigelow in Proc. Amer. Acad. Arts 3: 305–306. 1856
Opuntia echinocarpa var. major in Proc. Amer. Acad. Arts 3: 305–306. 1856
is basionym for Cylindropuntia acanthocarpa subsp. major in Cactaceae Syst. Init. 16: 16. 2003
is basionym for Opuntia acanthocarpa var. major, Cacti Ariz., ed. 3: 20. 1969
is basionym for Cylindropuntia acanthocarpa var. major in J. Arizona-Nevada Acad. Sci. 32: 42. 1999